Die



FOE; MUELLER.

\ DIE.

APPLICATION FILED JAN. 3, I919.

Patented Apr. 6,-

2 SHEETS-SHEET lfie x Z w K a y r w a W 1 w u 4 n .W. 3%. A, a n aArrow/5r F. E. MUELLER.

APPLICATION FILED JAN. 3, 1919- v Patented Apr. 6, 1920.

ZSHEETS-SHEET 2.

. 55 l a if .3968 4? 5"? 2 I r 55:47 5% A UNITED SATES PANT OFFICE.

FREDERICK E. MUELLER, OF MOUNT VERNON,

NEW YORK, ASSIGN OR TO THE NORMA COMPANY OF AMERICA, OF LONG ISLANDCITY, NEW YORK, A. CORPORATION OF NEW YORK.

DIE.

Application filed January 3, 1919. Serial No. 269,484. 7

To all whom itmayconcern: Be it known that-I, FREDERICK E. MUEL- LER, acitizen of Germany, and a resident of the city of Mount Vernon, in thecounty of estchester and State of New York, have invented certain newand useful Improvements in Dies, of which the following is aspecification. o

The present invention relates to improvements in dies, and theparticular embodiment disclosed herein, has for an object to provide adie for finishing. lateral flanges on tubular articles, in such manneras to preserve. the shape of the tubular portion without buckling orbulging, and without the formation of any ridges or other marks thereon.A further o'bjectis to provide such a die by which the flanges will forma' square corner with the tubular portion both exteriorly andinteriorly.

Whilein the present disclosure, a machine is shown adapted to perform aparticular shaped article, it will be understood that the principle ofthe invention may be employed in the formingof other shaped articles.

With these and other objects in view, an embodiment of my invention isshown in the accompanying drawing, and this embodiment will be hereaftermore fully described with reference thereto, and the invention will befinally pointed out in the claims.

In the accompanying drawings;

Figure 1 is a vertical sectional view through the line M (Fig. 2) andshowing the press and punch raised and the lateral formingmembersretracted;

Fig. 2 is a plan view of the die member and showing the lateral formingmembers moved in;

Figs. 3 and 4 are enlarged vertical sec tional views with parts brokenaway and showing the press and punch engaged with the die member, andthe completion position, respectively; and

Figs. 5 and 6 show, respectively, the forms of the article before andafter being acted upon .by the machine.

Similar reference characters indicate corresponding parts throughout theseveral figures of the drawings.

Referring to the drawings. and more par-' ticularly to Figs. 1 and 2thereof, the die member comprisesa base plate '10, having a centralopening 11 therein surrounded by an annular recess 12, in which is set aSpecification of Letters Patent.

spaced from the block 13,

Patented Apr. 6. 1920.

flanged central post or block member 13, se-

cured by screw bolts 14. A movable plate the upper surface of the plate,whilethe opening 19 is spaced from the said block.

along a portion of its length, as at 19*. Guide posts 20 are providedupon the base plate 10 and extend upwardly through passages 21 in theplate 15, the said passages being provided with a bushing 22 Adjustablelock nuts 23 are provided upon the upper ends of the guide posts, and anoil groove 24 extends spirally along the length of the said posts. I

Within the rim 16, and upon the plate 15, there are secured by! means ofscrew bolts 25 segmental plates 26, 27 and 28, conform- .ing at theircurved sides with the inner side of the rim 16, and having their apicesthus providing three slots, 29, 30 and 31, extending radially from thesaid block, and in which there are mounted slide pieces 32. A stop 33having projecting side portions, 34 and 35 disposed adjacent to plates26, 27 and 28 is secured in the ends of a screw bolt 36, and the slideis'forced toward the same by means of a spring 37, dlsposed in a passage38 in the slide, a slide pin 39 engaging the block 13.

1 Upon the upper side of the slide pieces, there are secured by means ofscrews 40 and dowels 41, chuck plates 42, the front ends of whichproject beyond the ends of the said of the slots by means pieces and arecircumferentially recessed as provided at their upper and lower surfaceswith lateral circumferential recesses 46 and 47, which form continuousannular recesses in the moved-in position of the slides. The

chuck plates are narrower than the slide are secured upon the saidplates by screw bolts 25, the projecting side portions of the saidplates 26, 27 and 28 engaging over the projecting portions of the slidepieces and holding them in place.

The post or block 13 is provided at its upper end with a pocket orrecess 48, within which there is provided a projecting and depressiblehead 49, the stem 50 of which extends downwardly throughan opening 51 inthe post and base plate 10, a shoulder 52 being provided in the openingabove which there is provided on the stem a spring 53, and below whichthere is provided at the end of the stem a washer 54, or other suitableenlargement, which limits the upper movement of the head. The head inits raised position forms a holder for the article to be shaped, andupon which the same isplaced prior to its being acted upon by the dies.Fig. 5 shows the form of the article at this stage.

he press and punch member comprises a reciprocating head 55, havingthree depending bars 56 secured thereto by screws 57 provided upon theirlower ends with beveled surfaces 58, adapted to enter behind and forcethe slide pieces 32, and the chuck plates 42 carried thereby, forwardlyinto engagement with the article, as shown in Fi 3. I

entrally of the head there is provided a punch 59, having a passage 60therethrough within which there is disposed a shaft 61, provided at itsscrew threaded upper end with a retaining nut 62, and provided at itslower end with a head 63 of smaller diameter than the'lateral surface 64of the die. The head 63 substantially corresponds in shape to the head49- and is of such dimensions as to enter snugly and entirel within thearticle as shown in Fig. 3 epressing the head 49.

In thefposition shown in Fig. 3, the cylindrical portion A of thearticle is rigidly held between the head 63 and the chucks, thecylindrical surface of the head and the recessed portions constitutingcontinuous circumferential holding and supporting means for both theinner and the outer surfaces of the said portion A. Sufficient space isrovided between the recessed portion 47 o the chuck plates and the uppersurface of the block 13 to accommodate the curved lower flange B of thearticle, while the upper curved flan e C is disposed between therecessed portion 46 and the lateral surface 64 of the punch.

Upon the further downward movement of the press and punch (Fig.- 4) themovable plate 15 is depressed, moving the chuck plates downwardlyrelatively to the block 13, while the punch is moved downwardly 'head 63is projected into the article, whereupon it may be removed, and the nextarticle to be formed placed in position.

I have illustrated and described a preferred and satisfactory embodimentof my invention, but it is obvious that changes may be made thereinwithin the spirit and scope thereof, as defined in the appended claims.

I claim: 1. In a die for shaping lateral configurations on tubulararticles, a stationary lower die member, an upper member, a resilientbed adapted to have up and down movement and surrounding said lower diemember, holding members supported on said bed and adapted to be movedinto engagement with said article to support the same exteriorly duringthe forming operation, a preliminary depressible positioning means onsaid lower die member adapted to position the article thereon and meanson said upper member adapted to enter within the article, disengagingsaid positioning means therefrom and supporting said article interiorlyduring the forming operation.

2. In a die for shaplng lateral configurations on the ends of tubulararticles, a stationary lower die member, constituting a support for thearticle and having an annular shaping portion, an upper die memberhaving an annular shaping portion, a resilient bed adapted to have upand down movement and surrounding said lower die 'member, a plurality ofradially disposed stantially continuous annular holding means adapted tosupport the said article exteriorly during the. orming operation andmeans carried by said upper member adapted to enter within saidarticle'and form a substantially continuous support for supporting saidarticle interiorly during the forming operation.

3. In a die for shaping lateral configurations on the ends of-tubulararticles, a stationary lower die member constituting a support for thearticle, and having an annular shaping portion, an upper die memberhaving an annular shaping portion, a resilient bed'adapted to have upand down movement, and surrounding said lower die member, a plurality ofradially disposed holding means adapted to be projected into engagementwith the article to hold the same durillg' the forming operation andprovided with holding surfaces constituting a substantially continuousannular holding means adapted to support said article exteriorly duringthe forming operation, depressible preliminary positioning means on saidlower member, and means on said upper member adapted to enter andsupport said article interiorly during the forming operation, andadapted to remove said preliminary positioning" ;means. from saidarticle.

member, aplurality of radially disposed holding means adapted to beprojected into engagement with the article to hold the same during theforming operation, and having at their upper and lower sides annularSl'lEP ing surfaces adapted on engagement with said article to engagesaid flanges of said article interiorly, and to cooperate with saidshaping-portions of said upper and lower die members engaging saidflanges exteriorly to shapesaid flanges .upon the compression of the.parts, said annular shaping surfaces constituting substantiallycontinuous surfaces in the engaged position of said holding means, andmeans adapted to support said article'interiorly during the formingoperation. i

In testimony that I claim the foregoing as my invention I have signed.my name hereunder. 1

FREDERICK E. MUELLER.

